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DPCNews 060 - Low-frequency magnetic fields and exposure of users (follow-up) / PT: penetration time vs viscosity / A too viscous penetrant

Written by Administrator
Friday, 12 July 2013 15:26

August 2013

Some readers are facing a problem to use the links between the newsletter and our Website, thanks to the parameters of the antivirus and/or antispam set in the server through which they receive this document. A warning message may be displayed.

If you do not trust in the DPCNewsletter or if you have any doubt, you may go directly to ou Website, by following this link.

An address we strongly advise you to put in your "Favorites", to make it easy to access to the reading of this DPCNewsletter and to all the papers already released, as well as the new ones released this month.

Our monthly DPCNewsletter draws your attention on the papers published on this Website at the same time, or reminds you of some papers already published (all of them are still available and some of them have been updated!) on the same topics as those dealt with in the new papers.

Enjoy reading this letter.

Underneath, find the list of the new papers that you can read this month on our Website:

In the "Edito" section

Low-frequency magnetic fields and exposure of users (follow-up)

This paper follows the one published on our Website, which dealt with the exposure of the MT operators to the low- frequency magnetic fields, according to the European Union regulations.
A new Directive of the European Parliament and of the Council released on 26 June 2013 has been adopted on the minimum health and safety requirements regarding the exposure of workers against the risks arising from physical agents (electromagnetic fields).

Read the full paper
On our Website.

In the "News" section

Penetrant Testing: Penetration time vs Kinematic viscosity

We often hear and read that at low temperature, when the temperature decreases, the penetrant becoming more viscous, the penetration time shall be increased and conversely, at high temperature, the penetration time can be reduced because the penetrant is less viscous.

Read the full paper
On our Website.

In the "Oldies but goodies" section

A too viscous penetrant

One of our papers had some words for a PT materials manufacturer who had designed a new generation of sensitivity Levels ½ to 4, water-based fluorescent penetrants. A challenging project.
The designer of these penetrants hoped to make a fantastic leap forward, but he had no contact with users.
He had his own ideas and he was used to getting his own way: never mind the users’ concerns!
Was he in the opinion that users had only to endorse his choices?

Read the full story
On our Website.

We, Pierre CHEMIN and Patrick DUBOSC, welcome any comment, any idea. If you have some examples you would like to see discussed here, please give us all the useful indications. If you require confidentially, we would modify locations, names and some parameters to prevent any traceability.
Nevertheless, we are convinced that our site may be a kind of surge-valve: the topic is NOT to target this company, or that auditor; but it is always to make users think, to make them ask themselves, or others, the right questions.

We may also give advice, once again on a confidential basis if needed: please, feel free to ask questions, to document our data basis: about Material Safety Data Sheets (MSDS), about environment, a chemical name you don't understand,a Penetrant process you have heard about, etc.
We have plenty of examples, some being out of all the specifications/standards, which led to the discontinuities detection, when the "current, normal, processes" prevented discontinuity finding.

Last Updated ( Friday, 12 July 2013 15:56 )